Radio apparatus



Feb. 9, 1932. w, 5HE|BEL 1,844,441

RADIO APPARATUS Filed March 2, 1931 2 Sheets-Sheet 1 VINVENTOR BY i ATTORN Y w. SCHEIBE'L RADIO APPARATUS Feb. 9, 1932.

Filed March 2, 1951 2 Sheets-Sheet 2 llntented lF ehi 9 1932 scnnrenn, or mew "roan. it. xx,

PATENT OFFICE ASSIGNOB TO BULOVA. WATCH COMPANY,

lEN'tl @IE N'HW 'YUIRK, N. "121, A CORPDRATION 035: NEW YORK IQ APPARATUS .tppllcatton met March $8, 1931.

The invention relates to radio receiving apparatus and to combination radio cloclrs.

tlne ot the objects ot the invention is to provide simple and inenpensive plan to tacilitate the setting ot the radio dial to tretyuently used stations.

another object is to incorporate in the encased unit an electric cloclr, a radio receiving set and an electrical connection beta tween the cloclr and the receiving set whereby the receiving set is started automatically at the time determined by the alarm arrange ment ot the cloclr.

in the accompanying drawings torming part hereot':

l a tront elevation of a radio-clock nnit embodying the invention;

2 is a tragmentar elevation on a larger scale showing the ial tor the radio receiving set;

big. 8 is a vertical section on the line 3-3 oil l ig. l;

'll ig. at is a section similar to a portion oil 8, showing a part ot a station marker in a 'difierent position;

hi 5 is a view partly in section and partly in sine elevation oi one term ct station marker by means t which the rotatable dial can be turned and locked;

t is a taco view of the same; i y

l is a view artly in plan view and partly in section at t e same iorm of marker;

lE ig. is a side elevation ot another form ot station nnirl-rer. which can also be used as a handle;

li ig. h is a tront elevation of this form ol marlrer;

10 is a front elevation or a modified dial member with two station markers of a type applied to it;

big ll is a section talren on the line 11- Ill ct l0 showing also portions of the slotted well out the case;

' l9. is perspective view o'lf one ct these with the tablet partly broken. away; .13 is a talren on the line l3--l3 ll; and

. ii is a similar section illustrating a Serial No. 519,292.

ing set, and the numeral 3 a synchronousmotor electric clock. Both of these are housed in the same case 4, in such manner that the face of the clock is visible and the controls for the radio set are accessible at the front of the case. 'A single electrical cable 5 supplies current to both the clock and the radio set. Inside the case there is an electrical connection 6 for conducting current to the radio set and this connection is controlled by the alarm arrangement of the clock, this alarm arrangement being sufiiciently represented by the alarm setting indicator 7. At the time for which this indicator is set the alarm arrangement of the clock completes the circuit to the radio set, and reception will then bcgin, provided, of course, that the switch and volume control knob 8 has been left in the on position. Customary electrical connections 9, 10' for connecting the radio set with the antenna and with a ground are indicated. The loud speaker 11 is disposed in a suitable manner. 7

The rotatable dial member of the radio set. consists preferably of a sector-shaped plate 12 disposed behind and parallel with the front Wall of the case. This dial member is preferably provided With the customary turning knob 13, which projects outside the case and is connected to the dial member at the region where it is rotatably supported. The outer zone 14 of the dial member is marked with the usual graduations and figures, as shown, and the Whole of this zone is always visible through an arcuate opening 15 in the front wall of the case, the angular extent of said opening being twice as great as the angular extent of said graduated zone.

The graduated zone of the dial member is "further provided with a series of engaging formations, which may be in the nature of small round openings 16 through the plate. The positions of the centers of these openings correspond with the positions of the several graduation marks. To accommodate a complete series of openings in a dial plate of small sine the openings maybe staggered.

These openings are adapted to receive the stems ot station markers, two forms of which N9 are illustrated. The markers 17 are in the form of small buttons or knobs having the stems 18 projecting from their backs. The faces of such buttons carry station designations 19, which may be applied directly to the buttons. It is advantageous, however, to use tablets 20 of paper, celluloid or other mate rial, imprinted with the designations, and to provide the faces of the buttons with flanges 21 forming pockets into which the tablets can be slipped.

The stems are formed to enter any of the ,holes 16 with a tight drive fit, or other form series of possible positions on the dial is of importance to both the manufacturer and the user, since different localities have different prominent broadcasting stations represented by different positions on the dial.

The front panel of the case may have a registering formation at the index position at the center of one edge of the slotted opening 15, this formation being preferably a notch 22, and the station markers may be provided with elements to engage this formation. As one means of accomplishing this I have shown the buttons as being constructed with slidable face portionsi23 connected with the back portions 24 by dovetails 25, so that when a; button is brought opposite the regisp tering formation its face portion can be slipped into the notch.

The markers are also adapted to 'serve as knobs or handles for moving the dial quickly and easily to any-of the stations whose designations they hear. The markers may be made long enough to project throughthe slot so that they can be grasped, or the projections which they form may be low, to be pushed by the tip of the finger.

The form of marker designated 17 illustrated in Figs. 8 and 9 is an angular or bent piece, comprising a stem 18 and a head 30.

of any suitable shape carrying the station designation 19 either directly a plied or uton by some equivalent of the ta let descri ed in connection with the other form.

In the form of the invention illustrated in Fi 10-12, the rotatable dial member 12" is ormed with a slotoropening 40, the upper edge 31 of which is curved concentrically with the top edge 32. One or both of these edges are serrated,'or otherwise formed with a series of fine teeth or indentations coextensive with the graduated zone 14 of the tion.

dial members. In this way the dial member is adapted to receive station markers which may be clipped, or clamped or frictionally' engaged with the dial member at the graduated or indicating zone. Such markers may be.

constructed in various ways.

Sheet metal devices 17 b have been illus trated, the metal being bent to form a front portion 33 which extends across the gradu-" ated'zone, hook portions 34. to engage over and under the edges 32 and 31, teeth'35 or their equivalent to engage the serrations of these edges, and handle extensions 36. These handle extensions are useful for turning the dial member, and by pressing them toward each other the jaw portions 3 1 can be spread sufficiently to enable the markers to be applied and removed, or to be changed from one position to another. The lower handle projection may have a notch or mark 37-to'faci1itate alinement with an index mark 38 on the wall of the case 4. A removable tablet 2O bearingthe station designation may be applied to the front part 143 in a suitable manner. As shown, the tablet is confined between the handle extensions and is retained by lugs 39.

In Figs. 11- and 13 teeth 35 are shown struck from the sheet metal, whereas in Fig. 14 a riveted tooth 35 is illustrated.

The edges 31 and 32 need not be serrated if it should not be desired to use the markers as handles for shifting the dial member, and even when they are to be used in this manner the engagement of the markers with the dial member can be firm enough for the purpose.

Numerous other forms and modifications of the markers and of the dial member and of the manner in which the markers are aplied to the dial member, may be employed without departing from the scope of the invention.

I claim:

1. In a radio dial, the combination of a rotatable dial member provided with a series of closely related openings, and a plurality of station markers having stems insertible in any of said openings.

tinuous series of positions along the dial, and

a panel having an opening through which all markers are always accessible.

3. In a radio dial, the combination of a rotatable dial member, a plurality of station markers applied to said dial member, and a slotted panel in front ofthe dial having a registering, index formation, said markers projecting through the panel slot and having elements adapted to engage with said formav 4: In a radio dial, the combination of a ro- 2. In a radio dial, the combination of a ro- I tatable dial member, a plurality of station dill 'tatable dial member, a plurality of station markers applied to said dial member, and a stationary part having a registerm index formation, said markers having shifta le portions adapted to be brought into engagement With said formation.

5. In a radio dial, the combination of a 1'0- tatable dial member provided with a series of openings, and a plurality of devices having stems insertible in any of said openings, sal devices bearing station designations and being adapted to serve as handles for turning the dial member.

6. In a radio dial, the combination of a rotatable dial member having an indicating none and slotted to present'two edges coextensive with said zone, and a plurality of station markers adapted to embrace and to be engaged with said edges at any positions with reference to said zone.

7. In a radio dial, the combination of a to tatable dial member having an indicatin some and a serrated edge coextensive with sai zone, and a plurality of station markers each having a tooth adapted to en age with said edge at any positions with re erence to said tone.

8. In a radio dial, the combination of a rotatable dial member having an indicatin zone -formed with outer and inner edges, an

a plurality of shii'table station markers constructed to engage said edges and transversely embrace said zone.

"WILLIAM sonninnn. 

